Sound amplifying and conducting mechanism



Aug. 22, 1933. A, coRbEs 1,923,066

SOUND AMPLIFYING AND CONDUCTING MECHANISM Filed Nov. 6. 1926 2 Sheets-Sheet 1 flriawjD, CZrdea ATTOR N EY Aug. 22, 1933. A CORDES 1,923,066

SOUND AMPLIFYING AND CONDUCTING MECHANISM Filed Nov. 6. 1926 2 Sheets-Sheet 2 ATTORNEY Patented Aug. 22, 1933 v barren sra'rss rarest SOUND AMPLIFYING AND CONDUCTING MECHANISM 1 illairn.

This invention relates to certain novel ini provemcnts in sound amplifying and conducting mechanism and has for its principal object the provision of an improved construction of this character which will be highly emcient in use 5 and economical in manufacture.

An object of the invention is to provide a novel sound---distributing unit. 7

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of to be hereinafter described and claimed.

The invention will be best understood by reiercnce to the accompanying drawings showing the preferred form of construction and in which:

Fig. 1 is a diagrammatical arrangement of the various elements embodied in the invention;

Fig. 2 is a diagrammatical view of a circuit arrangement embodied in the invention; and

3 is a sectional detail View on line 3-3 of Fi 2.

Referring to the drawings 10 indicates the floor of a motion picture operators room within which is confined the usual table 11 which supports the motion picture machine 12. This motion picture machine 12 is diagrammatically i1- lustrated and it is pointed out that any conventional motion picture machine may used which includes a drive pulley 13. I

This motion picture machine is used to reproduce motion pictures upon a screen 1-; which ordinarily is placed or arranged a predetermined distance within a theater.

It is an object as herein indicated to produce vocal sounds which will conform to the description and character of the picture displayed upon the screen and to accomplish this object I provide a reproducing machine 15. This r producing machine 15 may be of any conventional. type such as is now commonly in use and which includes a drive shaft 16 which drivcs'the record disk 17 in proper reproducing relation with respect to the reproducing needle 18. This drive shaft 16 has fixed thereon a pulley 19 which is operatively connected with the pulley 13 through the medium of a continuous belt 20, said pulley 13 being driven by a belt 21 operable by a suitable motor 22. The reproducer unit ltwvhich carries the needle 18 is connected to a sound chamber 23 through the medium of a conduit 24. The vocal sounds from the sound chamber 23 are arc-'- plified and transmitted by a transmittingunit 24! of any conventional type which'includes the usual amplifying and transmitting elements 25. The transmitting unit conveys the vocal sounds thus ((31. Bil-27) amplified through conductors 26 to a receiving unit 26' which is of the multiple type. This receiving unit 26 conveys the vocal sounds through conduits 27 to couplings 29 which connect the conduits 27 with sound-distributing horns 31 arranged in a casing 28. This casing 28 has a perforated i'ront Wall 30. This casing 28 is preferably disposed beneath the stage 32 from which extends the screen 14. The vocal sounds are further transmitted from the transmittingunit through conductors 33' to a sound-distributing unit generally indicated at 34 and constructed similar to the sound-distributing unit herein described which is arranged beneath the stage 32. This sound-distributing unit 34 is arranged above the screen la. From this it will be seen that the emsvocal sounds after being amplified will be trans-' mitted to the sound-distributing. units which are arranged contiguous to the screen 14 thus it is possible to produce vocal sounds which will conform to the description and character of the picture being reproduced upon the screen 14.

I have not described-nor illustrated the particular construction of the receiving units 26' nor the reproducing and transmitting unit because these units individuaily do not constitute a part of this invention as it is apparent from the p description herein that any conventional type units of these characters may be embodied in;

the circuit without departing from the spirit of the invention. I

7 From the above description taken in connection with the accompanying drawings it will be'seen that I provide a simple combination and arrangement of parts for reproducing vocal sounds to conform with the description and character of the picture being reproduced on the. screen 14.

By this arrangement it will be obviousthat during the reproducing of I a picture the various movements and parts taken by the actors as reproduced in the picture can be indicated by the reproducing of the vocal sounds from the record disk which record diskis made to set forth the nature and description of each part the actor takes in the picture.

While I have illustrated and described the preerred form of construction for carrying my invention into effect, this is capable of variation and modification, without departing from the spirit of1-105 the invention. I, therefore, do not/wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claim. I

The invention having been set forth, What I claim as new and desire to secure by Letters Pat ent is:

Sound-distributing apparatus comprising a housing-including a grilled side and a side opposite the grilled side having spaced openings pro- Vided therein, a coupling in each of said openings,

' a plurality of amplifying horns in the housing 

